CVE-2021-45971
An issue was discovered in SdHostDriver in Insyde InsydeH2O with kernel 5.1 before 05.16.25, 5.2 before 05.26.25, 5.3 before 05.35.25, 5.4 before 05.43.25, and 5.5 before 05.51.25. A vulnerability exists in the SMM (System Management Mode) branch that registers a SWSMI handler that does not sufficiently check or validate the allocated buffer pointer (CommBufferData).
- Score
- CVSS 3.1 8.2 High
- Status
- Modified - cve@mitre.org
- Published
- 2022-01-06
- Last modified
- 2026-08-11
- Weaknesses
- CWE-787
Affected products
- Insydeh2o (Insyde)
- Ruggedcom Ape1808 - Bios (Siemens)
- Simatic Field Pg M5 (Siemens)
- Simatic Field Pg M6 (Siemens)
- Simatic Ipc127e (Siemens)
- Simatic Ipc227g (Siemens)
- Simatic Ipc277g (Siemens)
- Simatic Ipc327g (Siemens)
- Simatic Ipc377g (Siemens)
- Simatic Ipc427e (Siemens)
- Simatic Ipc477e (Siemens)
- Simatic Ipc477e Pro (Siemens)
- Simatic Ipc627e (Siemens)
- Simatic Ipc647e (Siemens)
- Simatic Ipc677e (Siemens)
- Simatic Ipc847e (Siemens)
- Simatic Itp1000 (Siemens)
- Simaticipc277g Pro (Siemens)
- Siplus Ipc427e (Siemens)
References
- https://cert-portal.siemens.com/productcert/pdf/ssa-306654.pdf
- https://security.netapp.com/advisory/ntap-20220216-0004/
- https://www.insyde.com/security-pledge
- https://www.kb.cert.org/vuls/id/796611
- https://cert-portal.siemens.com/productcert/html/ssa-306654.html
